Laundry-tub



A. M. NIELSEN.

LAUNDRY TUB.

APPLICATION FILED JUNE 3| I915.

Patented May 18, 1920.

Invenlr,

AAGOT M. NIELSEN, OF BOSTON, MASSACHUSETTS.

LAUNDRY-TUB.

Specification of Letters Patent.

Patented May 18, 1920.

Application filed June 8, 1915. Serial No. 32,846.

To all whom it may concern:

Be it known that I, AAcor M. NInLsnN, a citizen of the United States, and a resident of Boston, in the county of Suffolk and Commonwealth of Massachusetts, have made certain new and useful Improvements in Laundry-Tubs, of which the following is a full, clear, and exact specification.

This invention has for its object the effecting of means for heating the water in one or both of the two set tubs of a laundry, where-- by not only is the employment of a washboiler rendered unnecessary, but hot washwater can be supplied even when there is no fire in the kitchen stove or range.

Tothis end, I provide one of the set tubs with a sheet metal bott0m-section having beneath it a gas burner, or other suitable heatsupplying means.

Referring to the drawings forming part of this specification, Figure 1 is a plan view of set tubs provided with a sheet metal b0ttom-section. Fig. 2 is a front sectional elevation of the set tubs throughthe broken line X-X in Fig. 1. Fig. 3 is a side view of the sheet metal bottom-section and its flame-guard.

The set tubs 1, 2 are of well known type, being made of concrete, soapstone or other lapidacious material, and in the bottom of preferably the left hand tub 1 is formed a circular hole midway between the end 3 and partition 4, but nearer the back 5 than the front 6, as indicated in Fig. l.

The bottom-section 7 is preferably formed with a deep downwardly extended flange 9 of slightly less diameter than said section, thereby forming a bead 10 at their junction. Said flange is dropped through said hole 11, and the bead 1O fitted in a recess 12 disposed for bringing the outer portion of the bottom-section flush with the upper surface of the tub-bottom 13, as shown in Figs. 2 and 3, sufiicient cement being used for rendering the same water-tight.

Since the sheet metal bottom-section expands under heat much more than does the tub, I make it concavo-convex so as to permit the expansion without injury to itself or to the more friable portion of the tub immediately surrounding it. Were the bottomsection made concave upward, the water would not drain ofi' therefrom, but by having it convex upward there is no hindrance to such drainage, and, in addition, the bottom-section is arched to more strongly resist the weight of the water above it.

Beneath the bottom-section 7 is located the heat-imparting means, preferably a gas burner 14%, as shown in Fig. 2, the flange or flame-guard 9 partially inclosing the burner in order "to confine the heat more perfectly to the bottom-section 7. Holes 16 are provided through the rear and lateral parts of the flame-guard for the escape of the prod ucts of combustion, but not through the forward portion of the flame-guard, in order ito shield the person at the tub from the ieat.

I find that the agitation of the water boiling in the set tub 1 is liable to loosen the plug ordinarily used for closing the outlet 17 and I therefore use a tube or rod 19 the lower end of which can be secured in the outlet by a bayonet-joint 20, as shown in Fig. 2, the upper, end of the rod or tube 19 rising nearly to the top of the tub.

To prevent the escape of steam from the heated water in the tub, I provide a cover 21 preferably hinged at 23 and provided with a handle 22 for manipulating it. Since a wooden cover 24 is usually laid upon the set tubs, both to keep them from dust and to provide a table or shelf, the upper edge of the tub 1 is formed with a ledge'25 sufficiently deep to bring the metal cover 21 and its handle 22 out of contact with the wooden When the set tubs are in use, the wooden cover 2 1 is removed and put away.

The hinged metal cover 21, when its use is not desired, can be swung up and toward the left hand sufficiently past a vertical line to he in no danger of falling back, the inclined surface 26 contacting with and sustaining the metal cover in such position.

In case there is no hot water in the boiler and it is wished to have warm water in the tub 2 as well as the tub 1, the latter is filled with cold water, and by means of above described means, raised to the high tempera ture desired. The opening or passage 27,

which is ordinarily closed by a gate 29, is

opened by the raising of said gate and water allowed to pass until at the same level in both tubs. A rod 30 rising nearly to the top of the tub is a means for opening and closing the passage and actuating the gate 29.

Ordinarily, where there is a supply of hot water to be drawn into the tubs, the washing is proceeded with in the customary manner in the right hand tub 2. The clothes are then dumped into the tub 1, with a supply of clean hot water, and boiled as long as deemed wise. The clothes are finally transferred to the tub 2 for final rinsing and bluing, and from the latter wrung out into flange fitting within the wall of the opening and the bead fitting within the annular recess, whereby the periphery of the bottom section is flush with the upper surface of the tub bottom, said bottom section being upwardly convex to permit drainage therefrom and to permit free expansion thereof when heated, and a heating means located within the flange, said flange constituting a I flame guard and provlded with perforatlons 1n its rear and lateral portions and being imperforate in its forward portions.

In testimony that I claim the foregoing invention I have hereunto set my hand this 5th day of June, 1915.

AAGOT M. NIELSEN.

lVitness A. B. UPHAM. 

